A person who has signed a contract of employment which outlines the rules and that the person has agreed to fulfil if they sign.
Contract Employee -- Where you work for one organization (and its salary and benefit structure) that sells your services to another company on a project or time basis. Compare to freelancer.
This is an employee hired to the employer by an employment agency to an organization, or obtains a job personally, on a fixed term or conditions.
The Contract Employee's Handbook
A useful, free resource for technical and professional independent contractors, by James R. Ziegler, Ph.D. Topics range from getting started to legal issues.
Consider using contract employees on an hourly rate when needed rather than hiring staff and incurring expenses for salary and benefits, as well as responsibility for their financial security.
Examples include contract employees at the end of their agreement, retirement and forced resignation. Mutual agreement does not necessarily mean that both parties are happy with the arrangement.
They are more mature and well-educated and are working as temporary and contract employees because it offers them the opportunity to understand the company's culture and working environment before actually making any commitment.
See also: Career, Job, Employee, Resume, Recruiter